NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2025-12-05 | 564-266 | 0XXX1XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | VANCOUVER | WA |
| 2025-08-15 | 564-263 | 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | OLYMPIA | WA |
| 2025-07-03 | 564-261 | 0XXX7XXX8XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | BELFAIR | WA |
| 2025-06-05 | 564-247 | 0XXX9XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | CENTRALIA | WA |
| 2024-12-09 | 564-274 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | VANCOUVER | WA |
| 2024-12-09 | 564-549 | 0XXX1XXX8XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | OAK HARBOR | WA |
| 2024-01-02 | 564-250 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | OLYMPIA | WA |
| 2023-09-26 | 564-245 | 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | SILVERDALE | WA |
| 2023-09-19 | 564-243 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | WHATCOMCTY | WA |
| 2023-04-19 | 564-241 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | CAMAS | WA |
| 2022-08-09 | 564-215 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | PT ANGELES | WA |
| 2022-06-07 | 564-224 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | ABERDEEN | WA |
| 2022-03-09 | 564-220 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | CENTRALIA | WA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.